# 🚀 Docker Multi-Container Web Application

## 📌 Project Overview
This project demonstrates the deployment of a multi-container web application using Docker.

It includes:
- Frontend (Nginx)
- Backend (Node.js)
- Database (PostgreSQL)

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## 🏗️ Architecture
Browser → Frontend → Backend → PostgreSQL

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## ⚙️ Technologies Used
- Docker
- Docker Compose
- Node.js
- PostgreSQL
- Nginx

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## 📦 Services and Ports

| Service         | Port |
|----------------|------|
| Frontend       | 8080 |
| Backend        | 3000 |
| PostgreSQL        | 27017 |

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## 🛠️ Setup

### Prepare
./prepare-app.sh

### Start
./start-app.sh

### Stop
./stop-app.sh

### Remove
./remove-app.sh

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## 💾 Persistence
PostgreSQL uses Docker volume, so data after restart.

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## Assistance Acknowledgment
This project was developed with the assistance of AI tools (such as ChatGPT) for guidance on concepts, debugging, and structuring the implementation.

All design decisions, implementation, and understanding of the system were carried out by the author.

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## 👨‍💻 Author
Sabareesan